Improve bus route handling

[nolanbconaway]

fixes #46

• Removes a bunch of validation around having to have registered the route to a url in advance. In hindsight i think the decision to add that validation caused more problems than it solved; really we just want this library to be smart enough to map routes to urls. This library was basically my first adventure into pydantic and i was maybe overzealous with the validation.
• Removes route remapping. Those routes are literally different, I do not know why I thought it was a good idea to merge them all....
• Removes the manual assignment of bus lines to the feed, as it is no longer needed.
• Adds an explicit handler in resolve_url for the bus url. either the bus url or BUS will be accepted.
• Adds docs concerning bus support
• python 3.14
• version 2.0.0

[nolanbconaway]

@WardBrian would you mind taking a look here? these changes are large enough that i'd like to have some eyes on it! Given your contribs, i'd be happy to add you as a contributor as well if you'd like.

[WardBrian]

I certainly can, though probably not until Tuesday. I’d also be happy to be added as a contributor :)

[nolanbconaway]

I certainly can, though probably not until Tuesday. I’d also be happy to be added as a contributor :)

No rush- whenever you have the time will be OK!

[WardBrian]

This looks good to me, I think it makes a lot of sense to treat buses like this.

One concern I do have is if the MTA one day decides to split up the bus feed like they have the trains, then this API would be a lot more cumbersome to implement. But, I suppose there's no reason to plan for something that might never happen, and if it did it could always just be a major version bump.

[nolanbconaway]

This looks good to me, I think it makes a lot of sense to treat buses like this.

One concern I do have is if the MTA one day decides to split up the bus feed like they have the trains, then this API would be a lot more cumbersome to implement. But, I suppose there's no reason to plan for something that might never happen, and if it did it could always just be a major version bump.

Yeah i think that's something we'll deal with if it happens!